Add trimming support for RuntimeSupport, SystemTextJson serializer and Lambda event packages (#1596)

Add trimming support for RuntimeSupport, SystemTextJson serializer and Lambda event packages when targeting .NET 8

Author: normj

.github/workflows/source-generator-ci.yml

@@ -22,6 +22,10 @@ jobs:
       uses: actions/setup-dotnet@v1
       with:
         dotnet-version: 6.0.x
+    - name: Setup .NET 8.0
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 8.0.100-rc.2.23502.2
     - name: Configure AWS Credentials
       uses: aws-actions/configure-aws-credentials@v1
       with:
@@ -73,6 +77,10 @@ jobs:
       uses: actions/setup-dotnet@v1
       with:
         dotnet-version: 6.0.x
+    - name: Setup .NET 8.0
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 8.0.100-rc.2.23502.2        
     - name: Restore dependencies
       run: dotnet restore Libraries/test/TestServerlessApp/TestServerlessApp.csproj
     - name: Build

Libraries/src/Amazon.Lambda.APIGatewayEvents/APIGatewayCustomAuthorizerPolicy.cs

@@ -10,15 +10,15 @@ public class APIGatewayCustomAuthorizerPolicy
         /// <summary>
         /// Gets or sets the IAM API version.
         /// </summary>
-#if NETCOREAPP_3_1
+#if NETCOREAPP3_1_OR_GREATER
         [System.Text.Json.Serialization.JsonPropertyName("Version")]
 #endif
         public string Version { get; set; } = "2012-10-17";
 
         /// <summary>
         /// Gets or sets a list of IAM policy statements to apply.
         /// </summary>
-#if NETCOREAPP_3_1
+#if NETCOREAPP3_1_OR_GREATER
         [System.Text.Json.Serialization.JsonPropertyName("Statement")]
 #endif
         public List<IAMPolicyStatement> Statement { get; set; } = new List<IAMPolicyStatement>();
@@ -31,23 +31,23 @@ public class IAMPolicyStatement
             /// <summary>
             /// Gets or sets the effect the statement has.
             /// </summary>
-#if NETCOREAPP_3_1
+#if NETCOREAPP3_1_OR_GREATER
             [System.Text.Json.Serialization.JsonPropertyName("Effect")]
 #endif
             public string Effect { get; set; } = "Allow";
 
             /// <summary>
             /// Gets or sets the action/s the statement has.
             /// </summary>
-#if NETCOREAPP_3_1
+#if NETCOREAPP3_1_OR_GREATER
             [System.Text.Json.Serialization.JsonPropertyName("Action")]
 #endif
             public HashSet<string> Action { get; set; }
 
             /// <summary>
             /// Gets or sets the resources the statement applies to.
             /// </summary>
-#if NETCOREAPP_3_1
+#if NETCOREAPP3_1_OR_GREATER
             [System.Text.Json.Serialization.JsonPropertyName("Resource")]
 #endif
             public HashSet<string> Resource { get; set; }